Figure 2.

Room temperature magnetic hysterisis loop of the 600°C-ignited sample. A clear loop can be observed in the VSM result which reveals ferromagnetism of the
sample. The saturation magnetization is about 155 A·m2/kg, and the coercivity is about 1.59 kA/m. Inset shows the relationship between saturation
magnetization of the prepared sample and the ignition temperature.